Ec_agnd signal

[kadi144]

hello!

i need to know what is this signal EC_AGND

in lenovo G50-70
THE shematics is here
https://www.badcaps.net/forum/showth...ighlight=aclu2


page 44

THANKS

[BlueMidnight]

Re: Ec_agnd signal

That is the analog ground for the EC. Digital signals are noisier and can transfer noise to analog signals using the same ground. This is why you will often see separate analog and digital grounds. They have to be connected together on the board somewhere (there can ultimately only be one ground), but it will be on the outside of the chip and not inside.

[kadi144]

Re: Ec_agnd signal

That is the analog ground for the EC. Digital signals are noisier and can transfer noise to analog signals using the same ground. This is why you will often see separate analog and digital grounds. They have to be connected together on the board somewhere (there can ultimately only be one ground), but it will be on the outside of the chip and not inside.

thanks

i have the IT8586E very hot and the laptop is dead

[kadi144]

Re: Ec_agnd signal

i think that is damged
it s short with the ground

[BlueMidnight]

Re: Ec_agnd signal

It shouldn't be getting very hot, so yes it might have a short. If it is the only bad chip, it can be replaced. But, the IT8586E has internal memory for the EC firmware. It must be programmed with a special tool.